Usually, you have a choice. It's your choice.
Came across DL Hammons site today thanks to the A to Z Challenge and saw his idea for Blog Blitz. He’s choosing someone from his list (of people who signed up to be on that list) and then randomly “playing tag” with that person to be it. The group will all go to that site, read their latest post and make an encouraging comment. Smart idea from DL: engaging, fun, and a bit addictive. Check out Blog Blitz and sign up.